<center>
<b><font size="+2">Entering Equations</font></b>
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<ul type="square">

<li><u>Equations must have an equals sign and use the correct variable names:</u>
<blockquote>
<tt>y = 5x+2</tt> &nbsp; will be incorrect if the answer is &nbsp; <tt>w = 5y+2</tt>
</blockquote>
</li>

<li><u>Examples of valid equations that are equivalent:</u>
<blockquote>
<tt>32 = 5*x + 2</tt> &nbsp; is the same as &nbsp; <tt>30 = 5x</tt> &nbsp; or &nbsp; <tt>x = 6</tt></tt><br />
<tt>y = (x-1)^2 + 3</tt> &nbsp; is the same as &nbsp; <tt>y - 3 = (x-1)^2</tt><br />
<tt>x^2 + xy + y^2 = 13x</tt> &nbsp; is the same as &nbsp; <tt>y*(y+x) = 13x - x^2</tt><br />
</blockquote>
</li>

<li><u>If there is no equation that solves the question:</u>
<blockquote>
Enter &nbsp; <tt>NONE</tt> &nbsp; or &nbsp; <tt>DNE</tt> &nbsp; (this may vary from problem to problem)
</blockquote>
</li>

<li><u>Examples of constants used in equations:</u>
<blockquote><tt>pi</tt>, <tt>e = e^1</tt></blockquote>
</li>

<li><u>Functions may be used in equations, but may not be applied across the equals sign:</u>
<blockquote>
<tt>sqrt(x) = sqrt(5)</tt> &nbsp; is valid, but &nbsp; <tt>sqrt(x=5)</tt> &nbsp; is not
<br /> 
<br />
<a href="http://webwork.maa.org/wiki/Available_Functions" target="_new">Link to a list of all available functions</a>
</blockquote>
</li>

</ul>
